Published for the first time: the Princeton INTERCAL Compiler's source codeIt is with great excitement that we share the original INTERCAL-72 compiler source code, as both scans and transcriptions (see below). Don recently rediscovered a print-out, on green-barred, continuous-feed pages, of the SPITBOL source code for the original compiler. INTERCAL ("Compiler Language with No Pronounceable Acronym") is the first language that can unequivocally be called an esolang. In INTERCAL, code is circuitous, full of symbols used in bizarre ways and with unique designations (#, for example, is the "mesh" sign). Sean Haas describes the process of getting the ical.sbl (INTERCAL compiler) program running on a modern system, using SPITBOLx64.